ASTROSAT CZTI

Data Quality Report

Orbit 39056

Creation date: 2024-06-27T21:59:51.083562
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_077T06_9000005430_39056cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39056cztM0_level2_quad_clean.evt
Size (bytes)430,447,68094,757,760
Size410.5 MB 90.4 MB
Events in quadrant A6,567,952536,060
Events in quadrant B2,528,411706,220
Events in quadrant C2,743,593668,583
Events in quadrant D3,694,878599,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232093
B0105782
C0111392
D0144062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129135826.476896%
B512970.136479%
C5129100.194970%
D51292605.069214%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7252 5130 1204 1204 16.60% 23.47%
B 7252 5130 1 1 0.01% 0.02%
C 7252 5130 5 5 0.07% 0.10%
D 7252 5130 222 222 3.06% 4.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 222 3864984 33402.63 578 569 115.7
A 10 83 397424 3430.27 578 569 115.7
A 15 223 40863 348.29 578 569 115.7
B 5 172 14420 116.34 632 617 118.6
B 12 111 13987 112.69 632 617 118.6
B 11 111 12871 103.28 632 617 118.6
C 15 214 216217 1527.01 623 630 141.2
C 15 208 37973 264.5 623 630 141.2
C 1 23 14883 100.95 623 630 141.2
D 2 249 810703 5470.8 610 592 148.1
D 12 233 206093 1387.78 610 592 148.1
D 12 227 146937 988.29 610 592 148.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter